The update is addressed only for Windows 10 version 1803 and Windows Server version 1803 releases, also known as the April 2018 Update.

Previous versions of Windows have already received Intel microcode patches via the Windows Update mechanism in KB4090007 and KB4091666.

The updates contain only Intel-specific code, which Microsoft agreed to a while back to help propagate to users faster than relying on motherboard providers to include the microcode patches as BIOS updates, a process that would have taken months, if not years.

KB4134660 and KB4134661

The two other updates Microsoft released today, KB4134660 and KB4134661, are meant to spam users with notifications and get them to update to the latest Windows 10 version, the April 2018 Update.

"This Windows update provides a notification of an improved privacy experience on the upgrade to the Windows 10 April 2018 release," their description reads.

The two updates are targeted at Windows 10 Version 1703 and Windows 10 version 1709 users only.

All three updates are available via Windows' automatic update installer or as separate update packages via the Microsoft Update Catalog portal.